The big block 2wd 67-72's came with the TH400 and used the same bolt in high hump that we use in our 4wd's. So you ought to be fine floor wise. I don't know if the length is different nor do I know about adapter differences.

I'm looking good floor wise with the 1" body lift. The linkage for the shifter is my main concern. The simple answer may be to swap linkages from the trannies but was hoping someone else has already done it and could shed some light on what they did.

I think the bracket on the tranny is different--the angle the squared out whole is cut at is a bit "off" on a TH400 ,compared to the TH350 one..

You might try loosening the pinch clamp on the shifter linkage,put the tranny in park by hand at the tranny with the clamp loose,make sure the shifter is in "Park" too,and tighten the clamp down...you may have enough adjustment to make it work with the TH350 bracket..if not you'll need the bracket off a TH400..not sure if any other parts are different,like the linkage from colum to tranny??.. .

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